. >> reporter: last fall team oracle 72-foot boat flipped over. no one was injured and oracle's smaller 145-foot boat also had a spectacular spill but again no injuries. america's cup organizers hope the faster boats and riskier competition will create enough excitement to attract spectators and television viewers when the races begin here on san francisco bay in july. john blackstone cbs news san francisco. >> america's cup does require every team member to take intense safety training. last october a team of sailors left hanging high up in the air when their boat capsized on the bay. since then the sport has implemented mandatory safety train. all sailors are required to wear helmets, carry knives, and crew members must carry a small air tank. >> we saw the oracle team i -- we sold the oracle team 20 of these larger ones and now they have bought a lot of the smaller ones. >> the air tanks are attached to the sailors vests. >> that is shawn went sworn in as acting chief yesterday. mayor jean quan says former acting chief anthony voluntarily took